共查询到20条相似文献，搜索用时 78 毫秒
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嘉兴黑猪名噪全球,素以高产仔,耐粗饲,肉味鲜著称。当今市场优质肉、极品肉风起云涌之际,嘉兴黑猪已到出山显赫其品种底蕴之时。有鉴于嘉兴黑猪瘦肉率偏低,长速偏慢,需要一个瘦肉率高,肉质好,长速快的黑色父本与其配套杂交从而期望能生产出瘦肉率较高的黑色精品肉猪。巴克夏猪是国际著名的黑毛优质猪种。因此,被用做父本与嘉兴黑母猪杂交生产巴嘉一代杂交优质商品猪。2012年霜降时节,笔者于浙江省嘉兴市浙江青莲食品股份有限公司种猪场 相似文献
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姚国强 《上海畜牧兽医通讯》2005,(6):29-30
嘉兴黑猪是我国著名的优良地方品种,属太湖猪的一个主要类群,素以产仔多、性成熟早、耐粗饲、适应性强、肉质好、杂交效果明显而著称.嘉兴黑猪主产于浙江省的嘉兴市各县（市、区）,并已遍布浙江全省各地,毗邻的上海、福建、安徽等省（市）亦有分布,是浙江省的重点保护品种.上个世纪70年代末,中国赠给法国5头嘉兴黑猪该国的育种专家利用嘉兴黑猪繁殖力特强的优点,经过20多年的培育,对提高法国猪种质量起了重要作用. 相似文献
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汉江黑猪品种资源作为分布于汉江流域的一个独立生态类型地方猪种,曾经为汉中及整个汉江流域的农业、经济、社会发展做出巨大贡献。汉江黑猪具有繁殖性能力强、肉质优良、口感好、风味独特、抗逆性强、适应性强等优良种质特性,与高生产性能、优良胴体性状的引进猪种有较好的杂交配合力,是进行杂交改进引入猪种繁殖能力低,肉质、口感差,适应性不强等不良性状的重要基因素材,也是我国自主培育新品种（品系）,振兴我国种猪业的优良育种素材。 相似文献
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在相同饲养管理条件下,利用杜洛克、巴克夏和苏太猪分别与豫南黑猪开展杂交试验,以纯种豫南黑猪为对照,分析三种杂交F1代猪肉常规肉质性状、营养成分、氨基酸组成、必需氨基酸评分及脂肪酸组成情况。结果表明:豫南黑猪纯种繁育后代的肌内脂肪、5种鲜味氨基酸和8种必需氨基酸的含量均高于其它杂交组合,但差异不显著(P0.05);豫南黑猪及其三种杂交组合F1代常规肉质指标表现优良,其中与杜洛克杂交显著增大了眼肌面积(P0.05),与巴克夏杂交显著提高了熟肉率(P0.05),与苏太猪杂交显著提高了肌肉嫩度(P0.05);不同杂交组合对猪肉中氨基酸的含量影响不显著(P0.05)。在四个杂交群体的背最长肌中,5种饱和脂肪酸含量各杂交组合间差异不显著(P0.05),但与苏太猪杂交后代6种不饱和脂肪酸含量显著高于其它杂交组合(P0.05)。豫南黑猪肉质优良,其鲜味氨基酸和不饱和脂肪酸含量丰富,与苏太猪杂交后的肉质综合效果好,与杜洛克和巴克夏杂交后的肉质性状突出,为豫南黑猪进一步开发利用提供一定的理论依据和技术支持。 相似文献
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1.辽宁黑猪
辽宁黑猪是南东北民猪与巴克夏猪杂交后经40余年风土驯化而成的地方优良品种,分布较广、数量较多,是辽宁省培育的主要杂交母本猪。该品种具有适应性强、繁殖力高、肉质好等优良特征。辽宁黑猪分为丹东黑猪、复县黑猪、吕罔黑猪和南台黑猪4个类群,其中丹东黑猪类群最多,约占整个辽宁黑猪一半以上。 相似文献
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辽宁黑猪的资源保护与开发利用 总被引：1，自引：0，他引：1
辽宁黑猪是由巴克夏猪与东北民猪杂交经过长期的自然和人工选择而形成的地方良种，已有60多年的培育历史。具有繁殖率高、肉质好、适应性强、杂交优势明显等特点，是我国优良母本猪．被誉为“国宝”。辽宁省共有十几个优良种猪品种．而辽宁黑猪分布最广，数量最多，是辽宁省的当家品种．在养猪生产中发挥着不可替代的作用。辽宁黑猪分为丹东黑猪、昌图黑猪、复县黑猪和南台黑猪四个类型，其中丹东黑猪数量最多，占整个辽宁黑猪的一半以上。辽宁省的养猪生产仍是以千家万户散养为主，约占65％左右，大部分农户还是习惯饲养黑毛猪或含有黑猪血统的母性强、好饲养的母本猪． 相似文献
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Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size. 相似文献
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In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum. 相似文献
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Nadine Pa?lack Barbara Mainzer Monika Lahrssen-Wiederholt Helmut Schafft Richard Palavinskas Angele Breithaupt Jürgen Zentek 《Journal of veterinary science (Suw?n-si, Korea)》2015,16(1):57-66
This study was conducted to measure the concentrations of strontium (Sr), barium (Ba), cadmium (Cd), copper (Cu), zinc (Zn), manganese (Mn), chromium (Cr), antimony (Sb), selenium (Se), and lead (Pb) in canine liver, renal cortex, and renal medulla, and the association of these concentrations with age, gender, and occurrence of chronic kidney disease (CKD). Tissues from 50 dogs were analyzed using inductively coupled plasma mass spectrometry. Cu, Zn, and Mn levels were highest in the liver followed by the renal cortex and renal medulla. The highest Sr, Cd, and Se concentrations were measured in the renal cortex while lower levels were found in the renal medulla and liver. Female dogs had higher tissue concentrations of Sr (liver and renal medulla), Cd (liver), Zn (liver and renal cortex), Cr (liver, renal cortex, and renal medulla), and Pb (liver) than male animals. Except for Mn and Sb, age-dependent variations were observed for all element concentrations in the canine tissues. Hepatic Cd and Cr concentrations were higher in dogs with CKD. In conclusion, the present results provide new knowledge about the storage of specific elements in canine liver and kidneys, and can be considered important reference data for diagnostic methods and further investigations. 相似文献
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《饲料工业》2019,(18):54-58
应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。 相似文献
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K Reifenberg M Stahl U L?sch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(3):191-198
A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays. 相似文献
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《The Journal of small animal practice》1975,16(1-12):143-154
Circular excised skin wounds in the thoracic and metatarsal regions of the dog were studied. A similar sequence of events took place in the two regions although differences did occur due to the different reactions of the tissues which surrounded the wounds. None of the wound cavities became filled with exudate during the early stages of healing. In the thoracic wounds the cavities were largely filled by the swelling and inward movement of adipose tissue. Epithelium first grew on the wound surface in the sector of the wound that was situated in the direction of hair flow. The average time to complete epithelization was similar in both sets of wounds. A zone of alopecia developed around the wounds. 相似文献
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